With the data of control experiment, aboveground, underground and total competition (TC) indexes were made with its biomass of subject tree and its competitors and the distance between them.
植物间竞争是空间上一种连续过程，包括对地上光资源的竞争和对地下水养资源的竞争。
Competition among trees includes aboveground and underground parts.
树木间竞争包括地上和地下部分。
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